Answer:
Step-by-step explanation:
Quadrilateral is divided into two triangles
Triangle 1:
Diagonal = 16m , h = 12m
Area1 = 

Triangle 2:
Area2 = 
= 8 * 4
= 32 square meter
Area of quadrilateral = 96 + 32 = 128 sq.m
20 pages in a hour. Because 12 x 5 is 60 and there are 60 minutes in a hour
Answer:
surface area of the triangular prism
(8×6)+(15×10)+(15×6)+(8×15)
48+150+90+120
408 m²
13 . ...................................................